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【单选题】
采用( )，可在强酸性阳离子交换剂上同时分析碱金属和碱土金属阳离子。A.
盐酸
B.
2，3-二氨基丙酸
C.
盐酸和2，3-二氨基丙酸
D.
盐酸或2，3-二氨基丙酸
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【简答题】Fill in each blank with the appropriate form of the word given in the brackets. 1.Improper handling of (complain)may lead to the dissatisfaction of customers. 2.We cannot acknowledge your clam for dam...
【单选题】. We acknowledge the receipt of your letter dated on May 4 ______the sales confirmation in duplicate.
A.
Drafting
B.
Declining
C.
Covering
D.
Stressing
【单选题】下列超声波对神经系统的影响,错误的是
A.
中枢神经对超声波的敏感性高于周围神经
B.
大剂量直接作用于脑组织可造成不可逆的损伤
C.
可用于治疗脑卒中
D.
对神经痛具有明显的镇痛作用
E.
超声波对自主神经无明显的作用
【简答题】Sentences arrangement. 1. We are surprised that you still demand payment by D/P. 2. We acknowledge receipt of your letter of July 3 under your reference JS6273, which arrived this morning, and wish to...
【简答题】The following sentence violates the writing principle of ( ). We acknowledge with thanks the receipt of your letter of July 1.
【简答题】We won't be able to send you the brochure this month. You are requested to make us the most favorable offer, stating origin, packing detailed specifications, quantity suppliable and the earliest time ...
【单选题】. We acknowledge the ____ of your letter and thank you for the order you have given us.
A.
Receive
B.
Receipt
C.
Received
D.
Receptionist
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